Insects Feeding
on these Plants:


Hordeum spp.
(Barley, Wild Barley) [Poaceae]
(Observations are from Needham et al., Blackman & Eastop, Spencer & Steyskal, Natural History Museum, ScaleNet)

Diptera (Flies)

Agromyzidae: Agromyza albipennis [larvae are leaf-miners; found in Illinois, Iowa, Massachusetts, New York, & Ohio] SS1986, Cerodontha dorsalis (Grass Sheath Miner) [larvae are leaf-miners, pupating in sheaths; widespread] SS1986; Ephydridae: Hydrellia griseola Ndm1928

Homoptera (Sucking Insects)
Aphididae: Atheroides serrulatus [found on the leaves of various grasses; this aphid was introduced from Europe into North America, including Quebec] BE2013, Carolinaia rhois [found on leaf undersides of sumac shrubs, migrating during the summer to the inflorescences of various grasses] BE2013, Diuraphis frequens [causes unfurled leaves to bunch-up, halting growth] BE2013, Forda formicaria [feeds on roots; this Eurasian aphid has been found in Illinois] BE2013, Forda marginata [feeds on roots; this Eurasian aphid has been found in Wisconsin] BE2013, Geoica utricularia [found on roots; this aphid was introduced from Eurasia into North America, including Illinois] BE2013, Metopolophium dirhodum (Rose-Grass Aphid) [found on roses as primary hosts, migrating during the summer to the leaves of various grasses, and some sedges & rushes] BE2013, Rhopalosiphum maidis (Corn Leaf Aphid) [found on young grass leaves, introduced in North America from Asia] BE2013, Sipha elegans [found on upper sides of grass leaves, causing them to roll upwards & develop yellow patches; this aphid occurs in Illinois, it is also found in Eurasia] BE2013, Sipha flava (Yellow Sugar Cane Aphid) [found on leaf blades of various grasses & sedges; widely distributed in the USA, including Illinois] BE2013, Tetraneura ulmi (Elm & Grass Root Aphid) [forms stalked sack-shaped galls on upper surfaces of elm leaves, migrating during the summer to the roots of various grasses; this Eurasian aphid has been found in NE USA, north-central USA, & Canada] BE2013; Pseudococcidae:
Heterococcus nudus (Naked Grass Mealybug) [found on the crown & underneath leaf sheaths of host plants; this insect is widely distributed in northern USA & California] SN2014

Lepidoptera (Butterflies, Skippers, & Moths)
Noctuidae: Protorthodes incincta (Banded Quaker Moth) NHM2010